.ag-header-cell-text {
    background: linear-gradient(90deg, red, orange, yellow, green, blue, indigo, violet, red);
    font-weight: 600;
    font-size: 20px;
    animation: animatedTextGradient 2.5s linear infinite;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% auto;
}

@keyframes animatedTextGradient {
    to {
        background-position: -200% center;
    }
}
